Portable light source



FIG. 1 is a front elevational view of a portable light source according to the present invention, attached to a head strap.

FIG. 2 is a front elevational view of the portable light source.

FIG. 3 is a rear elevational view of the portable light source.

FIG. 4 is a top plan view of the portable light source.

FIG. 5 is a bottom plan view of the portable light source; and,

FIG. 6 is a right side elevational view of the portable light source, with the left-side elevational view being the mirror image.

The head strap in FIG. 1 is shown in broken lines for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portable light source, as shown and described. 